Environmental Measurement Sonde

Accurate Caliper Determination of Borehole Geometry

Determine drilling performance with precise borehole-shape evaluation

The Environmental Measurement Sonde (EMS) determines the definite shape of the borehole for stress analysis studies. Caliper readings give you extensive drilling and petrophysical information.

Evaluate borehole geometry accurately

Get detailed information on borehole geometry for

  • better environmental correction of the imaging tool data
  • improved borehole stress analysis
  • precise cement volume estimation, even if the tool is eccentered.

Reduce rig time by combining measurement operations

Combining the improved caliper of EMS service with mud resistivity and temperature measurements supports real-time environmental correction of measurements from the AIT array induction imager tool, IPL integrated porosity lithology tool, and ARI azimuthal resistivity imager.

Enhance log interpretation

You can customize log presentations, as well as log answers to make better decisions with good visual indications of the borehole profile.

Because the EMS tool is combinable with all imaging tools and supported by the MAXIS multitask acquisition and imaging system, environmentally corrected wellsite logs can be produced without an extra trip into the hole.


  • Determine drilling performance with precise borehole-shape evaluation
  • Evaluate borehole geometry accurately
  • Reduce rig time by combining operations with other measurements
  • Enhance log interpretation with real-time depth matching of other logging tool data
  • Get accurate results with real-time environmental corrections for other logging tools

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